Every now and then on the Agora weather thread I want to say things like "today its hot but I'm cold" etc.I know in German it would be "I have hot" and in Serbo Croat it would be "It's hot to me"(ie dative).

None of my reading so far has been of Greeks chatting about the weather so I have notclue what it should be.

NateD26 wrote:Alternatively, you could use Perseus to find headwords related to cold& warm.

I know the words. I could just write "ἐιμὶ θερμος" but that would be like assuming I could in German say "Ich bin heis" and the single thing I remember from school German is the warning not to say that in Germany unless your intention is quite different from the English "I am hot".

kruo/omai. Unfortunately I can't seem to access LSJ online, but my hard copy lists it as a passive deponent with the meaning "be icy-cold" and a single citation of the form kruou=tai, "it freezes" from what must be an obscure Latin glossary included in the Corpus Glossariorum Latinorum ed. G. Loewe, G. Goetz & F. Schoell, Leipzig 1888-1924.

But despite lack of attestation in an authentic Greek text, it follows the canonical Greek rules of word-formation, and since I haven't been able to find a cite to Plato for "to be cold", something like this will have to do.

Θεαίτητοςἔοικεν.----------------------SocratesIt is likely that a wise man is not talking nonsense; so let us follow after him. Is it not true that sometimes, when the same wind blows, one of us feels cold, and the other does not? or one feels slightly and the other exceedingly cold?

TheaetetusCertainly.

SocratesThen in that case, shall we say that the wind is in itself cold or not cold or shall we accept Protagoras's saying that it is cold for him who feels cold and not for him who does not?

Off the top of my head: κρυόομαι and its variants were certainly more common than literary attestation would suggest; not least because it became canonical in post Classical Greek until modern day. This is your main one.

ῥιγόω is also fine though from what I recall it appears more often as a participle and tends to take the sense of shivering, shaking as much as cold. Also gets confused with ῥιγέω. Also the shuddering can be related to hot too like ῥιγόλυτον for a hot bath so the motion may be more important than the state.

Hot; much wider range here. There is a verb, I can't recall, from the zest- root I believe (or maybe from ζωθαλπής??). There are also adjective + verb formulations but you must be careful since they also carry the sense of being eager. I think Aristophanes makes use of words meaning to sweat in this context as well as verbs like χλιαίνω which are often transitive but can be warmed by external sources such as a fever. There is also διαίθομαι but I don't think this is literary so I can't be sure of the register here.

It would be worth checking medical treatises, you learn lots of interesting stuff about urine etc too.